STACKING STRENGTH CARTON WITH AN EASY OPENING FEATURE

• US 20090121003A1
• Filed: 11/07/2008
• Published: 05/14/2009
• Est. Priority Date: 11/13/2007
• Status: Active Grant

• Current Assignee: Georgia Pacific Corrugated LLC (KOCH Industries Incorporated)
• Original Assignee: Georgia Pacific Corrugated LLC (KOCH Industries Incorporated)
• Inventors: Garner, Chester
• Granted Patent: US 8,025,209 B2
• Time in Patent Office: Days
• US Class Current: 229/123.200
• CPC Class Codes: B65D 5/18 by folding a single blank to U-shape to form the base of the container and opposite sides of the body portion, the remaining sides being formed primarily by extensions of one or more of these opposite sides, e.g. flaps hinged thereto B65D5/36 takes precedence
• CPC Class Codes: B65D 5/26 with extensions of opposite sides mutually interlocking to lie against other sides
• CPC Class Codes: B65D 5/443 Integral reinforcements, e.g. folds, flaps double walls B65D5/02
• CPC Class Codes: B65D 5/5253 Containers initially closed but folded about a central axis to display the contents in two or more cells
• CPC Class Codes: B65D 5/548 for opening containers formed by erecting a blank to U-shape

Abstract

This invention relates to a carton having improved structural integrity and stacking strength. The carton is formed from a paperboard blank so it has reinforced end panels. A tear strip is formed by perforations in the top panel of the carton to provide an easy opening feature.

Claims

1. A carton comprising:

a top panel;

a bottom panel;

a first side panel and a second side panel each adjoining the top panel and the bottom panel;

a first end wall and a second end wall each adjoining the first side panel, the second side panel, the top panel and the bottom panel wherein the first end wall is formed from a first side panel first end flap in a face to face relationship with a first side panel second end flap with a first side panel third end flap adhered to the first side panel and a second side panel first end flap in a face to face relationship with a second side panel second end flap with a second side panel third end flap adhered to the second side panel; and

wherein the second end wall is formed from a first side panel fourth end flap in a face to face relationship with a first side panel fifth end flap with a first side panel sixth end flap adhered to the first side panel and a second side panel fourth end flap in a face to face relationship with a second side panel fifth end flap with a second side panel sixth end flap adhered to the second side panel.

2. The carton of claim 1, wherein the top panel includes a tear strip that extends between the first end wall and the second end wall.

3. The carton of claim 2, wherein the bottom panel includes a substantially longitudinally extending fold line about which the carton may be opened upon removal of the tear strip.

4. The carton of claim 3, in which the first side panel includes a handle defined by a semi-circular cut-out adjacent to a fold line between the top panel and the first side panel.

5. The carton of claim 1 further comprising an adhesive panel first end flap adhered to the first side panel second end flap and an adhesive panel second end flap adhered to the first side panel fifth end flap.

6. The carton of claim 5 further comprising a top panel first end flap adhered to the second side panel second end flap and a top panel second end flap adhered to the second side panel fifth end flap.

7. The carton of claim 6 wherein the top panel includes a tear strip that extends between the first end wall and the second end wall.

8. The carton of claim 7 wherein the bottom panel includes a substantially longitudinally extending fold line about which the carton may be opened upon removal of the tear strip

9. The carton of claim 8 wherein the first side panel includes a handle defined by a semi-circular cut-out adjacent to a fold line between the top panel and the first side panel.

10. A paperboard blank comprising:

an adhesive panel;

a first side panel adjoining the adhesive panel;

a bottom panel adjoining the first side panel;

a second side panel adjoining the bottom panel;

a top panel adjoining the second side panel;

a first side panel top end flap formed from multiple foldable sections;

a first side panel bottom end flap formed from multiple foldable sections;

a second side panel top end flap formed from multiple foldable sections; and

a second side panel bottom end flap formed from multiple foldable sections.

11. The paperboard blank of claim 10 wherein the top panel includes a longitudinally extending tear strip.

12. The paperboard blank of claim 11 wherein the bottom panel includes a longitudinally extending fold line.

13. The paperboard blank of claim 12 further including a perforation in the second side panel having an arcuate configuration and extending from a point adjacent to the top panel to another spaced apart point adjacent to the top panel.

14. The paperboard blank of claim 10 further comprising an adhesive panel first end flap adjacent to a top portion of the adhesive panel and an adhesive panel second end flap adjacent to a bottom portion of the adhesive panel.

15. The paperboard blank of claim 11 wherein the top panel includes a top panel first end flap adjacent to a top portion of the top panel and extending only partially across the width of the top panel and a top panel second end flap adjacent to a bottom portion of the top panel and extending only partially across the width of the top panel.

16. The paperboard blank of claim 15 wherein the bottom panel includes a bottom panel first end first flap and a bottom panel first end second flap adjacent to a top portion of the bottom panel and each extending only about one-half the width of the bottom panel and a bottom panel second end first flap and a bottom panel second end second flap adjacent to a bottom portion of the bottom panel and each extending only about one-half of the width of the bottom panel.